Electrical connector



Dec. 1, 1942. A, QCHUM A'L 2,303,471

ELECTRICAL CONNECTOR Filed Nov. 13, 1941 Inventma Jam 1- !jbeag??? M. Jizn llwz'kener Attarney Patented Dec. 1, 1942 I ELECTRICAL CONNECTOR Anna A. Jochum, Indianapolis, and John Frank Michener, Camel, Ind.

Application November 13, 1941, Serial No. 418,978 1 Claim. (Cl. 173-343) The present invention relates to new and useful improvements in electrical connectors, and has for its primary object to provide, in a manner as hereinafter set forth, a device of this characshaped circular groove 23 in the wall of the bore 5 accommodates the resilient elements 8 and permits flexing thereof in opposite direction.

The male member I includes a prong 9 which ter comprising male and female members of a 5 projects from ahead Ill. The prong 9 is engagenovel construction and arrangement whereby the able in the bore 5 of the plug 3 and said prong connection may be expeditiously made without is of sufiicientlength to extend entirely through the necessity of holding the male member in a said plug and project therefrom. At an intercertain predetermined position prior to its inmediate point the prong 9 has mounted thereon sertion. 10 a collector ring I l of substantially concave cross- Another very important object of the invensection in which the elements 8 of the ring 6 are tion is to provide an electrical connector of the engageable. This is shown to advantage in Figaforementioned character which includes unique ure 1 of the drawing. means for detachably securing the male and fe- Depending from the head I0 is an integral, cirmale members together. cular neck l2 which is engageable on one end Other objects of the invention are to provide of the plug 3. The neck i2 is spaced concentrian belectrgzal COlfilBCtOl of the character decaill lr fgogi the prong 91 andilin conjlusngtion a testescri ed w ich wi be comparatively simple in wi e nes an annu arc anne enea e construction, strong, durable, highly eflicient head l0. Extending into the head ill from the and reliable in use, compact, attractive in aptop thereof is a socket l4. Diverging passages pearance and which may be manufactured at low l5 establish communication between the socket cost. I4 andthe channel l3.

All of the foregoing and still further objects On the free end of the prong 9 is a contact l6. and advantages of the invention will become ap- A conductor I! in the prong 9 has one end conparent from a study of the following specificanected to the contact l6 and its other end secured tion, taken in connection with the accompanying by a screw I8 in the channel [3 of the head I0. drawing wherein like characters of reference des- A conductor l9 has one end electrically conignate corresponding parts throughout the sevnected to the collector ring II and its other end eral views, and wherein: secured in the channel [May a screw 20.

Figure 1 is a view in vertical section through so The socket l4 accommodates an end portion of an electrical connector constructed in accordance an extension cord 2!. The conductor wires 22 with the present invention. of the extension cord 21 are inserted through the Figure 2 is a view in horizontal section, taken p ag a electrically Connected W h t e substantially on the line 2-2 of Figure 1. conductors I1 and I9 by the screws l8 and 20.

Figure 3 is a view in horizontal section, taken It is thought that the manner in which the substantially on the line 33 of Figure 1. device functions will be readily apparent from Figure 4 is a detail view in elevation of the male a consideration of the foregoing. Briefly, the member. prong 9 is inlserteci1 in the gore 5 of the plug 3 and Referring to th drawing in detail, it will be projected t mug and eyond said plug, the seen that the embodiment of the invention which 40 neck I2 engaging one end thereof. The resilient has been illustrated comprises complemental 1 t 8 of th ring 5 snap t t t male felnale members I f respectively, tially concave collector ring II for releasably se- Of Sultable msulatmg lcuring the male and female members together The female 2 composes a Plug 3 and for providing a good electrical connection mg on one end portlon a suitable screw shell 4 therebetweem when the plug 3 is Screwed into g 2 g g g g g i f an electrical receptacle the element l6 functions a t isefi ti na3 th1a eg s:cket or rig eg t cle 0 as the base Contact of the connection The plug 3 has formed centrally therein and 1 blelewed the g i g adYantageS 3 an extending from end to end thereof a bore 5. fi g r fi m F Z Embedded in the plug 3 at an intermediate point Wlth t 6 present mven Ion W1 8 readl un is a Snap ring 6. The ring 6 is electrically com stood, and although a preferred embodiment of nected at 1 to the shell The ring 5 includes the device is as illustrated and described, it is to integral gripping elements 8 which project into be understood that changes in the details of conthe bore 5 of the plug 3. A substantially V- struction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

An electrical connector comprising a female member having a bore therein for the reception of a male member, said female member further having a substantially V-shaped, circular groove at an intermediate point in the wall of the bore, a metallic screw shell mounted on one end p'ortion of the female member, and a snap ring em bedded in the female member at an intermediate point and electrically connected to the shell, said snap ring including inwardly extending resilient elements projecting into the bore for engagement with the male member and adapted to flex in opposite directions in the groove.

ANNA A. JOCHUM. JOHN F. MICHENER. 

